Search Results - "Malko, JA"

An in vivo magnetic resonance imaging study of changes in the volume (and fluid content) of the lumbar intervertebral discs during a simulated diurnal load cycle by Malko, J A, Hutton, W C, Fajman, W A

“…Magnetic resonance imaging was used to measure the changes in volume of the lumbar intervertebral disc in vivo during a load cycle. To measure changes in…”
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An in vivo MRI study of the changes in volume (and fluid content) of the lumbar intervertebral disc after overnight bed rest and during an 8-hour walking protocol by Malko, John A, Hutton, William C, Fajman, William A

“…Magnetic resonance imaging (MRI) was used to measure the changes in the volume (and fluid content) of the lumbar intervertebral discs (L1-L2, L2-L3, L3-L4,…”
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Search for influence of 1.5 Tesla magnetic field on growth of yeast cells by Malko, J A, Constantinidis, I, Dillehay, D, Fajman, W A

“…We have used a clinical magnetic resonance imager to search for the possible effects of a 1.5 T magnetic fields on the growth of the yeast Saccharomyces…”
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An attenuated projector-backprojector for iterative SPECT reconstruction by Gullberg, G T, Huesman, R H, Malko, J A, Pelc, N J, Budinger, T F

“…A new ray-driven projector-backprojector which can easily be adapted for hardware implementation is described and simulated in software. The…”
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SPECT Liver Imaging Using an Iterative Attenuation Correction Algorithm and an External Flood Source by Malko, J.A, Van Heertum, R.L, Gullberg, G.T, Kowalsky, W.P

“…The results obtained from the inclusion of a new intrinsic attenuation correction algorithm into a protocol for SPECT liver imaging are presented in this…”
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Leptomeningeal metastasis: MR imaging by Davis, P C, Friedman, N C, Fry, S M, Malko, J A, Hoffmann, Jr, J C, Braun, I F

“…Seven patients with central nervous system neoplasia and leptomeningeal metastases, proved either at initial diagnosis or on follow-up with contrast…”
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Acquisition order and motional artifact reduction in spin warp images by Dixon, W T, Brummer, M E, Malko, J A

“…Multiple averaging can be a powerful tool against motional artifacts if significant motion occurs between the redundant acquisitions taken at a given gradient…”
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Magnetic resonance artifact in the postoperative cervical spine. A potential pitfall by Peterman, S B, Hoffman, Jr, J C, Malko, J A

“…An magnetic resonance imaging artifact that stimulates hypertrophic bone formation is described in patients who have had an anterior cervical discectomy. The…”
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The bright intervertebral disk: an indirect sign of abnormal spinal bone marrow on T1-weighted MR images by CASTILLO, M, MALKO, J. A, HOFFMAN, J. C

“…Two phantoms were constructed and imaged for the purpose of reproducing and understanding the relatively increased signal intensity of intervertebral disks on…”
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Manganese dipyridoxyl diphosphate. Effect of dose, time, and pulse sequence on hepatic enhancement in rats by Nelson, R C, Chezmar, J L, Newberry, L B, Malko, J A, Gedgaudas-McClees, R K, Bernardino, M E

“…We used an animal model to investigate the hepatic enhancement characteristics of manganese dipyridoxyl diphosphate (MnDPDP) related to time, dose, and pulse…”
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Gadolinium-DTPA and MR imaging of pituitary adenoma: a preliminary report by Davis, PC, Hoffman, JC, Jr, Malko, JA, Tindall, GT, Takei, Y, Avruch, L, Braun, IF

“…Gadolinium-DTPA MR imaging (Gd-MR), unenhanced MR imaging, and contrast-enhanced CT studies were compared prospectively in six patients with surgically…”
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MR measurement of intracranial CSF volume in 41 elderly normal volunteers by Malko, JA, Hoffman, JC, Jr, Green, RC

“…A noninvasive nonplanimetric MR protocol was used to measure the total intracranial CSF volume in 41 normal subjects, aged 60-84 years, who were intensively…”
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More on bulls-eye thallium display by Eisner, R L, Malko, J A

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Flow-sensitive MR imaging of ventriculoperitoneal shunts: in vitro findings, clinical applications, and pitfalls by Castillo, M, Hudgins, PA, Malko, JA, Burrow, BK, Hoffman, JC, Jr

“…To determine ventriculoperitoneal shunt patency during routine MR imaging of the head, 23 patients were studied with T1-weighted fast-field-echo scans. Without…”
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Lumbar disc volume measured by MRI: effects of bed rest, horizontal exercise, and vertical loading by Hutton, William C, Malko, John A, Fajman, William A

“…Nutrition to the cells in the disc is partly dependent on fluid flowing out during the day and flowing in during bed rest. In spaceflight there are little or…”
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Eddy-current-induced artifacts caused by an "MR-compatible" halo device by Malko, J A, Hoffman, Jr, J C, Jarrett, P J

“…Traction or halo devices thought to be compatible with magnetic resonance (MR) imaging and made of nonferromagnetic metals may actually cause MR image…”
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Jugular venous thrombosis: MR imaging by Braun, I F, Hoffman, Jr, J C, Malko, J A, Pettigrew, R I, Dannels, W, Davis, P C

“…Magnetic resonance (MR) imaging of jugular venous thrombosis was investigated in three patients who had symptoms suggestive of this condition; the diagnosis…”
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Hand-held electronic teaching-aid for demonstrating MRI concepts by Malko, J A, Nelson, R C

“…We describe a hand-held electronic teaching-aid for magnetic resonance imaging (MRI), which can be used to demonstrate the dependence of signal intensity on…”
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A phantom study of intracranial CSF signal loss due to pulsatile motion by Malko, JA, Hoffman, JC, Jr, McClees, EC, Davis, PC, Braun, IF

“…MR imaging of the head often reveals localized areas of decreased signal intensity (flow voids) within the CSF. These flow voids are caused by turbulence…”
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Are hepatic and muscle T2 values different at 0.5 and 1.5 Tesla? by Bernardino, M E, Chaloupka, J C, Malko, J A, Chezmar, J L, Nelson, R C

“…In an effort to determine whether T2 values of liver and muscle change with increasing field strength, 144 abdominal MR examinations were retrospectively…”
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